Clock-escapement



(No Model.)

G. P. GANSTER.

. CLOCK ESOAPEMENT.

No. 286,419. Patented Oct. 9, 1883.

UNITED STATES PATENT OFFICE.

GEORGE I. GANSTER, OF READING, PENNSYLVANIA.

CLOCK-ESCAPEM ENT.

SPECIFICATION forming part of Letters Patent No. 286,419, dated October9, 1883,

Application filed February 12, 1883.

To all whom it may concern:

Be it known that I, GEORGE 1?. GANSTER, of Reading, Berks county, in theState of Pennsylvania, have invented certain new and useful ImprovementsRelating to Clock-Escapements, of which the following is aspecification.

I combine with a peculiar escapement, already patented to me, theprinciple of the pendulum or of the spring-balance, the two beingequivalent in this combination, as fully set forth below. i

The following is a description of what I consider the best means ofcarrying out the invention.

The accompanying drawings form a part of this specification.

Figure 1 is a front view, and Fig. 2 an edge view. Figs. 3 and atrepresent a modification in which a spring is employed as a substitutefor the pendulum. Fig. 3 is a front view, and Fig. l an edge view.

Similar letters of reference indicate corresponding parts in all thefigures.

I have in Letters Patent issued to me dated December 19, 1882, No.269,278, set forth a form of escapement in which two oscillating wheelsare employed, geared together, and

actuatedby an escapement-wheelproper,which turns intermittently in onedirection and acts alternately on pins on the two oscillating wheels. Iemploy such in my present inven tion, the intermittent escapementwvheelbeing marked A and the two oscillating wheels A A".

Instead of, as in my said patent of December, 1882, having the center ofgravity of each of the said oscillating wheels in the axis of motion, sothat each wheel is balanced and capable of turning or standingindifferently in all positions, I attach to each oscillating wheel apendulum, BB These pendulums, swinging in opposite directions with theoscillations of their respective wheels, control the time by well-knownlaws. The two pendulums should be adjusted as nearly alike aspracticable. They may be regulated, like ordinary pendulums, by turningnuts to raise or lower the bobs. Each may have the well-known parallelbars of different metals to make it selfregulating for change oftemperature, if desired.

I can introduce a spring analogous to the hair-spring of the oscillatingfly-wheel of watches and chronometers with analogous (No model.)

provisions for adjustment thereof, instead of a pendulum, if preferredin any case. I consider such a spring an equivalent of a penduhim so faras this invention is concerned. The action is similar in tending to holdthe wheel in a certain fixed position, and resisting its divergence fromsuch position on either side, allowing it to swing alternately past thatposition from one side to the other and back, sub ject to the sameconflict between its inertia, and a constant force, so as to determinethe time accurately independent of slight variations in the impellingforce received from the clock mechanism.

I esteem the direct action of the teeth of the escapement-wheel againstthelrespective pins a a an important quality in my former device abovereferred to. By my present invention I have applied a pendulum or anequivalent spring in combination therewith and obtained increasedcorrectness of timekeepin The two pendulums, by vibrating in oppositedirections at the same time, and exactly balancing each other, relievethe general mechanism and easing from most or all of the vibrationattending the ordinary clock action.

Modifications may be made in the forms and proportions.

Parts of the invention may be used without the whole.

I can use the device with only one pendu lum, simply fixing a pendulumon the shaft of one wheel, A, and leaving the other wheel, A, in thefree condition set forth in my former patent.

I claim as my invention- 1. The escapement-wheel A, two connectedoscillating wheels, A A, engaged therewith, as shown, in combinationwith each other, and with a pendulum, B, connected to one of the wheelsA, and serving to aid in regulating the time, .as herein specified.

2. The two pendulums I3 13, swinging in opposite directions, incombination with the geared wheels A A", and escapement-wheel A, andsuitable driving mechanism arranged for joint operation, as hereinspecified.

In testimony whereof I have hereunto set my hand, at New York city, this9th day of February, 1883, in the presence of two subscribing witnesses.

GEORGE I. GANSTER.

\Vit-nesses:

HATTIE A. JOIINSTONE,

B. E. D. STAFFORD.

